﻿<?php
	class Email
	{
		var $host_name;//host名称:localhost
		var $relay_host;//host
		var $smtp_port;//端口号
		var $auth;//身份验证
		var $user;//当前host下的用户名
		var $pass;//当前Host下的密码
		var $time_out;
		var $log_file;
		var $debug;
		var $sock;
		
	/* Constractor */
		function Email($relay_host = "", $smtp_port = 25,$auth = false,$user,$pass){
			$this->debug = true;
			$this->smtp_port = $smtp_port;
			$this->relay_host = $relay_host;
			$this->time_out = 30; //is used in fsockopen()
			$this->auth = $auth;//auth
			$this->user = $user;
			$this->pass = $pass;
			$this->host_name = "localhost"; //is used in HELO command
			$this->log_file ="";
			$this->sock = FALSE;
		}

	/* Main Function */
		function sendmail($to, $from, $subject = "", $body = "", $mailtype, $cc = "", $bcc = "", $additional_headers = ""){
			$mail_from = $this->get_address($this->strip_comment($from));
			$body = preg_replace("/(^|(\r\n))(\\.)/", "\\1.\\3", $body);
			$header='';
			$header .= "MIME-Version:1.0\r\n";
			if($mailtype=="HTML"){
				$header .= "Content-Type:text/html\r\n";
			}
			$header .= "To: ".$to."\r\n";
			if ($cc != "") {
				$header .= "Cc: ".$cc."\r\n";
			}
			$header .= "From: $from<".$from.">\r\n";
			$header .= "Subject: ".$subject."\r\n";
			$header .= $additional_headers;
			$header .= "Date: ".date("r")."\r\n";
			$header .= "X-Mailer:By Redhat (PHP/".phpversion().")\r\n";
			list($msec, $sec) = explode(" ", microtime());
			$header .= "Message-ID: <".date("YmdHis", $sec).".".($msec*1000000).".".$mail_from.">\r\n";

			$TO = explode(",", $this->strip_comment($to));
			if ($cc != "") {
				$TO = array_merge($TO, explode(",", $this->strip_comment($cc)));
			}
			if ($bcc != "") {
				$TO = array_merge($TO, explode(",", $this->strip_comment($bcc)));
			}

			$sent = TRUE;
			foreach ($TO as $rcpt_to) {
				$rcpt_to = $this->get_address($rcpt_to);
				if (!$this->smtp_sockopen($rcpt_to)) {
					$this->log_write("Error: Cannot send email to ".$rcpt_to."\n");
					$sent = FALSE;
					continue;
				}
				if ($this->smtp_send($this->host_name, $mail_from, $rcpt_to, $header, $body)) {
					$this->log_write("E-mail has been sent to <".$rcpt_to.">\n");
				} else {
					$this->log_write("Error: Cannot send email to <".$rcpt_to.">\n");
					$sent = FALSE;
				}
				fclose($this->sock);
				$this->log_write("Disconnected from remote host\n");
			}
			// echo "<br>";
			// echo $header;
			return $sent;
		}


		function smtp_send($helo, $from, $to, $header, $body = ""){
			if (!$this->smtp_putcmd("HELO", $helo)) {
				return $this->smtp_error("sending HELO command");
			}
			if($this->auth){
				if (!$this->smtp_putcmd("AUTH LOGIN", base64_encode($this->user))) {
					return $this->smtp_error("sending HELO command");
				}

				if (!$this->smtp_putcmd("", base64_encode($this->pass))) {
					return $this->smtp_error("sending HELO command");
				}
			}
			if (!$this->smtp_putcmd("MAIL", "FROM:<".$from.">")) {
				return $this->smtp_error("sending MAIL FROM command");
			}

			if (!$this->smtp_putcmd("RCPT", "TO:<".$to.">")) {
				return $this->smtp_error("sending RCPT TO command");
			}

			if (!$this->smtp_putcmd("DATA")) {
				return $this->smtp_error("sending DATA command");
			}

			if (!$this->smtp_message($header, $body)) {
				return $this->smtp_error("sending message");
			}

			if (!$this->smtp_eom()) {
				return $this->smtp_error("sending <CR><LF>.<CR><LF> [EOM]");
			}

			if (!$this->smtp_putcmd("QUIT")) {
				return $this->smtp_error("sending QUIT command");
			}
			return TRUE;
		}

		function smtp_putcmd($cmd, $arg = ""){
			if ($arg != "") {
				if($cmd=="") 
					$cmd = $arg;
				else 
					$cmd = $cmd." ".$arg;
			}
			fputs($this->sock, $cmd."\r\n");
			$this->smtp_debug("> ".$cmd."\n");
			return $this->smtp_ok();
		}

		function smtp_sockopen($address){
			#如果smtp服务器为空
			if ($this->relay_host == "") {
				return $this->smtp_sockopen_mx($address);
			} else {
				return $this->smtp_sockopen_relay();
			}
		}

		function smtp_sockopen_relay(){
			$this->log_write("Trying to ".$this->relay_host.":".$this->smtp_port."\n");
			$this->sock = @fsockopen($this->relay_host, $this->smtp_port, $errno, $errstr, $this->time_out);
			if (!($this->sock && $this->smtp_ok())) {
				$this->log_write("Error: Cannot connenct to relay host ".$this->relay_host."\n");
				$this->log_write("Error: ".$errstr." (".$errno.")\n");
				return FALSE;
			}
			$this->log_write("Connected to relay host ".$this->relay_host."\n");
			return TRUE;
		}

		function smtp_sockopen_mx($address)
		{
			$domain = preg_replace("/^.+@([^@]+)$/", "\\1", $address);
			if (!@getmxrr($domain, $MXHOSTS)) {
				$this->log_write("Error: Cannot resolve MX \"".$domain."\"\n");
				return FALSE;
			}
			foreach ($MXHOSTS as $host) {
				$this->log_write("Trying to ".$host.":".$this->smtp_port."\n");
				$this->sock = @fsockopen($host, $this->smtp_port, $errno, $errstr, $this->time_out);
				if (!($this->sock && $this->smtp_ok())) {
				$this->log_write("Warning: Cannot connect to mx host ".$host."\n");
				$this->log_write("Error: ".$errstr." (".$errno.")\n");
				continue;
			}
			$this->log_write("Connected to mx host ".$host."\n");
			return TRUE;
			}
			$this->log_write("Error: Cannot connect to any mx hosts (".implode(", ", $MXHOSTS).")\n");
			return FALSE;
		}

		function smtp_message($header, $body){
			fputs($this->sock, $header."\r\n".$body);
			$this->smtp_debug("> ".str_replace("\r\n", "\n"."> ", $header."\n> ".$body."\n> "));

			return TRUE;
		}

		function smtp_eom(){
			fputs($this->sock, "\r\n.\r\n");
			$this->smtp_debug(". [EOM]\n");
			return $this->smtp_ok();
		}

		function smtp_ok(){
			$response = str_replace("\r\n", "", fgets($this->sock, 512));
			$this->smtp_debug($response."\n");
			if (!preg_match("/^[23]/", $response)) {
				fputs($this->sock, "QUIT\r\n");
				fgets($this->sock, 512);
				$this->log_write("Error: Remote host returned \"".$response."\"\n");
				return FALSE;
			}
			return TRUE;
		}

		

		function smtp_error($string){
			$this->log_write("Error: Error occurred while ".$string.".\n");
			return FALSE;
		}

		function log_write($message){
			$this->smtp_debug($message);
			if ($this->log_file == "") {
				return TRUE;
			}
			$message = date("M d H:i:s ").get_current_user()."[".getmypid()."]: ".$message;
			if (!@file_exists($this->log_file) || !($fp = @fopen($this->log_file, "a"))) {
				$this->smtp_debug("Warning: Cannot open log file \"".$this->log_file."\"\n");
				return FALSE;
			}
			flock($fp, LOCK_EX);
			fputs($fp, $message);
			fclose($fp);
			return TRUE;
		}
		#
		function strip_comment($address){
			$comment = "/\\([^()]*\\)/";
			while (preg_match($comment, $address)) {
			$address = preg_replace($comment, "", $address);
			}
			return $address;
		}

		function get_address($address){
			$address = preg_replace("/([ \t\r\n])+/", "", $address);
			$address = preg_replace("/^.*<(.+)>.*$/", "\\1", $address);
			return $address;
		}

		function smtp_debug($message){
			if ($this->debug) {
				echo $message."<br>";
			}
		}

		function get_attach_type($image_tag) { //
			$filedata = array();
			$img_file_con=fopen($image_tag,"r");
			unset($image_data);
			while ($tem_buffer=AddSlashes(fread($img_file_con,filesize($image_tag))))
			$image_data.=$tem_buffer;
			fclose($img_file_con);
			$filedata['context'] = $image_data;
			$filedata['filename']= basename($image_tag);
			$extension=substr($image_tag,strrpos($image_tag,"."),strlen($image_tag)-strrpos($image_tag,"."));
			switch($extension){
			case ".gif":
			$filedata['type'] = "image/gif";
			break;
			case ".gz":
			$filedata['type'] = "application/x-gzip";
			break;
			case ".htm":
			$filedata['type'] = "text/html";
			break;
			case ".html":
			$filedata['type'] = "text/html";
			break;
			case ".jpg":
			$filedata['type'] = "image/jpeg";
			break;
			case ".tar":
			$filedata['type'] = "application/x-tar";
			break;
			case ".txt":
			$filedata['type'] = "text/plain";
			break;
			case ".zip":
			$filedata['type'] = "application/zip";
			break;
			default:
			$filedata['type'] = "application/octet-stream";
			break;
			}
			return $filedata;
		}

	}
	
	
#用法：
// $smtpserver = "smtp.163.com";//SMTP服务器
// $smtpserverport =25;//SMTP服务器端口
// $smtpusermail = "liangkxlwy@163.com";//SMTP服务器的用户邮箱
// $smtpemailto = "cui.pf@neusoft.com";//发送给谁
// $smtpuser = "liangkxlwy";//SMTP服务器的用户帐号
// $smtppass = "liangxiaoben521";//SMTP服务器的用户密码
// $mailsubject = "测试邮件";//邮件主题
// $mailbody = "<h1> 这是一个测试程序</h1>";//邮件内容
// $mailtype = "HTML";//邮件格式（HTML/TXT）,TXT为文本邮件
// $smtp = new Email($smtpserver,$smtpserverport,true,$smtpuser,$smtppass);//这里面的一个true是表示使用身份验证,否则不使用身份验证.
// $smtp->debug = FALSE;//是否显示发送的调试信息
// $smtp->sendmail($smtpemailto, $smtpusermail, $mailsubject, $mailbody, $mailtype);
?>

